Condenser rack



April 10, 1928.

H. l. DANZIGER CONDENSER RACK Filed Nov. 2, 1926 INVENTOR HAROLD l. DANZIGER M5 ATTORNEY Patented Apr. 10, 192 8.

UNITED STATES v 1,666,044 PATENT OFFICE.

HAROLD I. DANZIGER, OI NEW YORK, N. Y., ASSIGNOR TO CONDENSER CORPORATION OF AMERICA, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

CONDENSER RACK.

Application filed November 2, 1926. Serial No. 145,870.

' plied to condenser racks of the character rewith layers of conducting material such as ferred to, nevertheless it will be obvious after this specification has been read, that as to certain phases of my invention, an application of this character is not essential.

.In the manufacture of electrical condensers of the'type wherein layers of paper or the like are interposed in alternate relation tinfoil, it is desirable to provide a supporting rack of the character to whiclrthis invention relates, said rack being designed to support the condenser units in stacked relation during certain portions of the manufacturing rocess. More particularly, where the con enser units are subjected to various steps of treatment which include impregnation by a hardenable liquid material, such as wax, it is desirable to provide a rack which will subject the condenser units ,to pressure in a manner which will be more fully. set forth hereinafter.

It is an object of the present invention to provide a rack of this character, and it is a particular object to provide a rack wherein 'certain structural characteristics ,-render it particularly useful and efficient for a purpose of the character described.

A manufacturing process of the character hereinbefore referred to generally entails the impregnation of condenser units with a material which shrinks during the hardening thereof. This is a factor which must be borne in mind in connection with the subjection of the units to pressure. Where a plurality of stacked units are to be impregnated, it is desirable to subject them to pressure before impregnation so as to preclude the formation of air pockets within the units. After they have been impregnated, it is desirable to retain them under pressure fora similar purpose. However, inasmuch as the impregnated units arelikely to shrink during the coolingof the impregnating material, a' difliculty arises which I- .have'solvcd by means of the present invention,

.Where I'have attempted to employ a rack wherein means are provided for adjusting the pressure from time to time, said means comprising an unyielding arrangement exemplified by a hand-press arrangement, I have found that amaximum output efliciency of perfect condensers is not obtainable. 'lhis is due to the fact that the pressure means is not uniformly adjusted, and this in turn is due to the fact that suflicient personal attention cannot be paid to indi- 5 vidual racks during the hardening of the units. 011 the other hand, where the units are subjected to an excessively great initial pressure, in an attempt to render subsequent adjustment unnecessary, serious impairment of the units frequently occurs for obvious reasons. I

It is an object of the present invention to provide a rack whose employment will obviate these diificulties;and it is a more specific object to provide a rack wherein selfadjusting means are provided for retaining the condenser units under suitable pressure conditions.

Briefly, my invention contemplates the 0 provision of resilient means for continuously urging a cover for the elements in a direction which retains the stack under sustainedcompression in a yieldable manner.

It is accordingly a feature of my inven- 35 tion to provide a rack wherein relatively adjustable base and cover elements are ar ranged to support the stack therebetween, and wherein resilient means, such as'a spring or springs, cooperates between the base and cover to provide a continuous force for creating sustained compression. 'In a preferred 1 embodiment, the resilient means comprises a compression spring which is operatively interposed between the adjustable cover and an element fixedly associated with the base.

Another feature of my invention lies in providing means for initially adjusting the operative strength of the resilient means. And in a preferred embodiment, this adjust 10o ing means is of such a character that it may also be employed for the purpose of adjusting the initial positional relation of the resilient means with respect to the base and cover. In general, it is an object of the invention to provide a device which is both simple in construction and staunch in nature; which embodies relatively few cooperating elements; whose elements are of a simple and separable nature rendering likelihood of damage or defective operation small; and which embodies features which simplify, expedite, and increase the efficiency of the condenser manufacturing process.

For the-attainment of the foregoing objects and such other objects as may hereinafter appear or be pointed out, I have illustrated one embodiment of my invention in the accompanying drawings in which- Fig. 1 is a front elevational view of a rack constructed in accordance with my invention, and associated with a stack ofelements;

Fig. 2'is a. plan view of the same;

Fig. 3 is a cross-sectional plan view taken along the line 3 '3 of Fig. 1; v

Fig. 4 is an enlarged view of a portion of a rack, showing one adjustment thereof; and

Fig. 5 is a view similarto Fig. 4 showing another adjustment thereof.

Referring to the drawings and particularly to Figs. 1, 2, and 3, it will be observed that I have shown a rack having a base 10 and four angular supporting \elements 11 arranged in parallel relation and extending upwardly from the base so as to form side supports or walls. At the opposite end of the elements 11 I have shown a top element 12 substantially similar to the base 10 and constituting a fixed element with respect to the latter.

A plurality of elements 13, such as condenser units of the type referred to, are designed to "be arranged in stacked relation upon the base 10. In order to render these elements insertable and removable, I have shown one of the angular elements 11 associated with the base 10 and the top 12 in a removable manner, indicated by the slots 14 and the bolts 15.

After the elements 13 have been stacked, it is contemplated that they will be supported at opposite ends of the stack, and it will be observed that I have shown a separ- .able and relatively removable cover plate 16 vlihich may be applied to the top of the stac The invention contemplates the associa-'- tion with the cover 16, and in cooperative relation betweenthe cover and the rack proper, of resilient means for constantly urging the cover toward thebase with predetermined force. Thus, it will be observed that I have shown the top element 12 provided with a central aperture through which a suitably shaped rod 17 extends. This'rod constitutes aspring supporting member, and

is therefore provided with an enlarged portion or collar 18 which is disposed beneath the cover 12. Extending downwardly from the collar 18isan e tension which providesinside support for the upper end of a com- 5.5

pressi'on "spring. 19, correspondingly, an

upwardly projecting extension carried by the cover 16 provides insidesupport for the lower end of the spring 19.

The spring 19 is a compression spring,

and is illustrative of the type of resilient means contemplated by the invention. It will be observed that it extends between the cover 16 and the collar 18, and inasmuch as the spring supporting member .17 is designed to be normally in locked association with'the top 12, it may be said that the spring 19 is operatively interposed between the cover and the top 12.

The rod 17, which is in effect a spring abutment, is made adjustable with respect to the fixed element 12, and I have illustratively shown a set screw 20 associated with the top 12 and bearable against the rod 17 to secure the latter in any desired position with respect to the top 12.

It will now be obvious that adjustment of the rod 17 with respect to the top 12 may serve to either (1) adjust the initial tension of the spring 19, or (2) adjust the positional relation of the spring with respect to the rack proper. Thus, in Fig. 1 I have shown a relatively high stack of elements 13, and consequently the spring 19 is positionally as close to the top 12 as it could be, because the shoulder 18 is bearing against the under-side of the top 12. On the other hand, in Figs. 4 and 5, the spring is relatively remote from the top.12. I

In the employment of my device, a stack of desired size is arranged within the rack, the cover 16. is applied thereto, the spring 19 is associated with the cover and arranged to abut against the collar 18, and the rod 17 is then adjusted relative to the top 12 to produce the desired initial tension. The rack, with the stacked elements therein, is then subjected to desired steps of the manufacturing process, and, it is obvious that the rod 17 may, if desired, be subsequently ad- 'ried by the top 12; -Assuming that the element 13 are now subjected to an impregnw tion, and assuming that the impregnation will cause shrinkage-,antl therefore a reduction-in the height of the stack, the cover 16 and the spring 19 will gradually assume a position such asthat shown in Fig. 5. It

will be observed that tlie cover 16-is still held under 'pressure'against the to of the stack, and that the stack has there pro been retained under sustained'i compress on. 1 In: other words, after the initial ad ustment been substantially increased-- the latter being sustained automatically, and

being quite different-in nature fromthe intermittently increased pressure WhlCh the hand-press arrangements have heretofore.

created. v Furthermore, the condensers are not subjected to any excessive initial pressure which might have impairing eli'ects 7 upon them.

' the appended claims.

tended that, these details be interpreted as' In general, it will be observed that my device is :both .simple in construction and use;

and staunch, reliable, and eificientin opera tion. a

It will be obvious that many changes in v the details herein described and illustrated for the purpose of explaining the nature of invention maybe made by those skilled in the, art without departing from the spirit and scope of the invention as expressed in It is therefore inillustrative, and not in a limiting sense.

Havingthus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is 1. In a condenser rack for subjecting a stack of retained condenser bodies to im pregnat-ion treatment, a supporting frame comprising a base plate adapted to receive said stack thereon, a top plate, and a set of spaced longitudinal frame elements extending 'between the base and top plates; a separately applicable cover plate for the stack; and a compression spring interposed between the cover and top plates; whereby the condenser bodies may be yieldably retained under sustained pressure in stacked relationship during the impregnation treatment thereof a 2. In a condenser rack for subjecting a stack of retained condenser bodies to impregnation treatment, a supporting frame comprising a base plate adapted to receive sai stack thereon, a top plate and a set of spaced longitudinal frame elements extending between the baseand top plates; at least one of said frame elements bein adjustable into and out of normal interposition between said platesto permit stacking of the bodies; aseparately applicable cover plate for the stack; and a compression spring interposed between the cover and top plates; whereby the condenser bodies may be-yieldably retained under sustained pressure in stacked 's way, itwill-be observed that the relationship duringthe impregnation treat-.-

ment thereof. 3'. ln'a condenser rack air subjecting" a lstack' of retained condenser bodies to pregnation treatment, a supporting frame 'comprisingfa base plate adapted to receive said stack thereon, a top plate, and-a set of spaced longitudinal frame elements extending between the base and top plates-; 'at'least,

one of said frame elements being removably 'associipted with the base. and top plates to perm-1 stacking of the bodies; a separately applicable cover plate for the stack; and a conipressionspring interposed between the cover and top plates; whereby-the condenser bodies may. be yieldably retained under sustained pressure in stacked relationship during the impregnation treatment thereof.

4. In a condenser rack. for subjecting a stac kof retained condenser bodies to impregnation treatment, a supporting frame comprising a base plate-adaptedto receive said-stack thereon,-a top plate, and a set of spaced longitudinal frame elements extending between the base and top plates; a separately applicable-cover plate for the stack; a .compi ession spring operatively interposed between the cover and top plates; and means for initially tensioning said spring; said means comprising a-rodslidably associated with the top plate and having its inner end portion constructed as a spring abutmentand support, and means for locking said rod in desired positional relation ,to'said top plate; whereby the loaded rack may be handled ,as a unit for and during the impregnation treatment, and whereby the condenser bodiesmay be yieldably retained undera desired-sustained pressure during said handling and treatment.

5 In a condenser rack for subjecting a stack of retained condenser bodies to impregnation treatment, a supporting frame comprising a base plate adapted to receive said stack thereon, an apertured top plate, and

a set of spaced longitudinal frame elements extending'between the base and top lates; a separately applicable cover plate or the. stack; a compression spring operatively inplates terposed between the cover and top said and means for initially tensionm spring; said means comprising a rod s idably arranged in said aperture andhaving its inner end portion constructed as a spring abutment and support, and a set screw a-rrangement associated withthe top plate and adapted to engage said rodfor locking the latter in'desired positional relation to said top plate.

In witness whereof, I have signed this specification this 25 day of October, 1926.'

HAROLD IL DANZIGER. 

